How does the Slenderman's AI (if that) work?

[Kreekakon]

Probably things like:

-Constantly checking to see how much pages the player has, and determine Slenderman's actions accordingly.
-Checking if the player is looking at Slender
-There is also likely so sort of variable that keeps track of how long total you've stared at Slenderman even if he doesn't kill you. From what I've seen, I'm guessing it affects some of his behavior depending how the total amount of time you spent looking at him too long.